Aspects concerning the geometric elements of the rolling deformation area

Abstract

The paper presents an experimental and practical study of aluminium strips lamination, calculating the conformations that define plastic deformation by lamination. A sample from aluminium alloy in the shape of a band was rolled and we calculated the logarithmic deformations in lamination. We started the lamination process from a semi-finished product, with a surface for the cross-section section (S0) and it was carried out in three drawings up to a final section (S3). The deformation assessment and measurement tool, the logarithmic degree of deformation gives the extent of the plastic deformation at each drawing, and the calculated total deformation degree is useful to quantify the deformation preformed for the entire lamination process over the three drawings. If analysed in this way, the plastic deformation process, the material undergoes a higher reduction at the last drawing and an ecruisation of the band at its margin also. The preliminary usage of the coefficients defining lamination has a particular importance for practical objectives, in the carrying out of another lamination process.